A discrete signal path of the present disclosure is able to distinguish between normal blink patterns and unique purposeful blinking patterns in order to control functionality in a powered ophthalmic lens. The discrete signal path of the present disclosure is able to detect the presence or absence of a non-human-capable communication sequence, such as a computer-generated communication signal of alternating light patterns that are unlikely to be accomplished by a human eye. The discrete signal path of the present disclosure is also able to be integrated into an ophthalmic device.
